Abstract : In accordance with OPRA (Government Performance and Review Act) and the study of the Operations and Maintenance Program, the Natural Resources Management Branch of the Corps has set out to develop performance measures. The development of two such measures is dependent on the acquisition of further information. Specifically, information is needed regarding the percent of Corps acreage included in Fish and Wildlife Service (FWS) Endangered Species Recovery Plans that meet the recovery plan requirements; and the percent of Corps acreage included within North American Waterfowl Management Joint Venture Implementation Plans where proposed work has been accomplished. This report seeks to provide this information. In summary, the Corps has recovery responsibilities for 65 listed species with final recovery plans and for 11 listed species with draft recovery plans. Nearly 40% of those species with final recovery plans are found within the South Atlantic Division. There are an estimated 312 Corps projects which are involved in such recovery plans. The Corps has an estimated 7,480,000 acres of land and waters possibly involved in final recovery plans. Over 20% of this area (1,673,000 acres) is found within the Omaha District. Recovery responsibilities of the Corps range from the highly involved (e.g., monitoring populations, developing management strategies; modifying habitat) to ones that are limited in scope (e.g., ensuring that 404 permits do not adversely harm species).